Electric boiler.



.|. N. FULLER.

ELECTRIC BOILER.

APPLICATION FILED DEc. I. 1917.

Patented June 18, 1918.

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JOHN N. FULLER, 0F PHILADELPHIA, PENNSYLVANIA.

ELECTRIC BOILER.

Specication of Letters Patent.

Patented June 18, l1918.

Application led December 1, 191'7. Serial No, 204,908.

To all whom it may concern:

Be it 'known that I, JOHN N. FULLER, a citizen of the United States, residing at 1858 S. 56th St., Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Electric Boilers, of which the following is a specification.

The invention relates to boilers and has for an object to provide an electric-boiler for use in rapidly heating a quantity of water, and in fact, generating steam, with a minimum amount of electricity in a short space of time.

Among other features, the invention comprehends the use of a heating coil, preferably formed of coiled wire 'susceptible to an electric current, and which whenheated will in turn heat water in the boiler body, to a point where it will-be converted to steam.

With these and other objects in view, the invention also comprehends a novel form of arrangement that will take up very little space, and especially within the boiler body keo -will not greatly reduce the fluid area.

In the further disclosure of the invention, reference is to be had to the accompanying drawing, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which- Figure 1 is a side elevation of the boiler,

Y parts being broken awa and shown in section, to disclose the un erlying structure.

Fig. 2 is a fragmentary horizontal sectional view taken substantially along the line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional view taken' through the form of plug. I l Fig. 4: is a view looking at one end of the Plug and Fig. 5 1s a view looking at the other end of the plug.

Referring more particularly lto the views,

10 indicates a boiler casing or drum of any desired form, preferably mounted on a suitable base 11 provided with a safety 'valve 12.

The drum or casing 10 has a water inlet l14 and a steam outlet 15, the ends of the cylindrical drum or casing being in the nature of heads 16.. Suitably secured within the casing and to the heads 16 are supports or sockets 17 for a horizontally arranged bar 18 made of some non-conducting or insulating material, upon whlch 1s suitably wound a coil of wire 19, known as a heating coil;

one end of the wire 19 being secured one l of the heads 16 as at 20, with a wire 21 attached by meansof a screw or bolt 22 to the said head, and leading to the source of ,electric energy, so that it will beseen that' the heating coil is practically grounded to the boiler body. s

Suitably screwed or otherwise secured to disks 27, arranged on each'side of. an en larged diamond-shaped portion -28 of tle rod or electrode. AIfdesirable a'suitab e rubber or other gasket 29 can be arranged adjacent to the inner end of the casing 24, and a disk. 30 is arranged to encircle the rod loosely near the outer end of the casing. A threaded element 31 is engaged with the casing '24 to extend therein and bear against the disk 30, so that when the element 31 is screwed up it will compress the material 26 in the casing so as to form a water- `tight joint, that will prevent leakage of water from the interior of the boiler tothe exterior thereof, and also will suitably insulate-the electrode 25n from the casing 24, the diamond-shaped part of the electrode serving further to aid in the compression' of the material around the inner opening of the casing, as well as around the opening in the disk 30w'hen' theelement 31 is screwedup on the casing. to compress the material therein, as will be clearly seen.

It will be apparent that when the sourceof electric energy is connected with the plug 23 to close the circuit withA the wire 21, the heating coil will beheated to a degree which willl result in the heating of the water in the boiler, and the subsequent formation of. steam which can then pass outthrough the outlet 15.

From the foregoing description it will be seeny that the structure described is of a simple nature, comprehends few parts, that can be readily assembled and will not easily get out of order, and although I have shown my particular form of boiler, itwill be undef-stood that may employ a, veitionil or horizontal type in accordance with atising condi-tieney daim:

A beat/er oompiising e, easing, inlet and outlet pipes communicating therewith, n, support upon the' innei1 side ofeeob enti ot seid casing provided in its upper edge with n nfs/cess7 ai rod entii'eiy inoioseti Wit seid easing and having its endssenting Within seid teeessess e Wine coiled about said fooiv and! having one end seemed to smid casing,

intento JHN bi1. FLLER,

Witness: l

T, Emmen'. 

